Grain-car door.



A. DAVIDSON, M. JENSEN & J. P. BLOGKER.

GRAIN GAR DOOR.

APPLICATION TILED APILZB, 1913.

Patented Sept. 29. 1914.

wi/tmeaoeo THE NORRIS PEN-IRS CO.. PHOIO-LITHO WASHINGTON. DC.

UNITED STATES PATENT OFFICE.

ANDREW DAVIDSON, MARTIN JENSEN, AND JOHN BLOCKEB, OF DEVILS LAKE,

NORTH DAKOTA.

GRAIN-CAR DOOR.

Specification of Letters Patent.

Patented Sept. 29, 1914.

Application filed April as, 1913. Serial No. 764,276.

To all whom it may concern: I

Be it known that we, ANDREW 'DAVIDSON MARTIN JENSEN, and JOHN P. BLOCKER, citi- Zens of the United States, residing at Devils Lake, in the county of Ramsey, State" of North Dakota, have invented certain new and useful Improvements in Grain-Gar which can be quickly and easily opened or closed, and whichwill effectively prevent grain leaking from the car when the door is in closed position.

Another object is to provide a sectional door with means for holding the same against movement, and further means for holding the said holding means positively disengaged when the door is open.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is an elevation of our door looking from the outside of the car showing the door in closed position. Fig. 2 is a similar view showing the position of the parts when the door is to be opened. Fig. 3 is a vertical section on the line 3-3 of Fig. 1. Fig. 4 is a horizontal section on the line %4 of Fig. 1. Fig. 5 is a vertical section on the line 55 of Fig. 1. Fig. 6 is a horizontal section on the line 66 of Fig. 1.

Referring particularly to the accompanying drawings, 10 and 11 represent the end stiles of the door frame of the .graincar,

while at 12 is represented the sill thereof, and secured to the upper face of the sill is a metal plate 13, the function of which will appear later.

Hinged to the vertical stile 10 by means of the double hinges 14 is the section 15 of the door. To the outer end of the section 15 is hinged the section 16, this section having its other end beveled as indicated at 17 and removably seated in the vertical longitudinal recess 18 in the inner face of the stile 11. Secured to the outer face of the section 15 near its lower edge is a sill engaging plate 19, this plate being slotted vertically as at 20 to receive the bolts 21 of the brackets 22. These brackets are secured to the section 15 and extend downwardly onto the face of the plate l9,these brackets being slightly offset to permit the plate to ride up between them on the section of the door when the plate moves as will be more clearly described later. Secured to the lower portion of the section 16 is a similar sill engaging plate 23, this plate being also slotted and guided by the brackets 24. Mounted on the section 16 is a longitudinal shaft 25, this shaft having on its ends the segmental pinions 26 and 27.

Secured to the plate 23 and slidable vertically through theguide 28 is a rack bar 29, the teeth of which engage with the teeth of the-segmental pinion 26. Carried centrally by the shaft 25 is a hand operated lever 29".

In normal position, the lever 295 extends vertically downward, in which position the plate 23 is down on the sill 12 and against the edge of the plate 13. NVhen the lever 29 is thrown upwardly, the shaft will be rotated and the segmental pinion 26 will lift the rack bar 28, so. that the plate 23 will be raised above the sill plate 13.

Secured to the inner end of the plate 19 is a vertical bar 30, this bar being suitably guided by the straps 31 secured to the section 15, the free ends of said straps being bifurcated asat 32 and formed with vertical registering openings 33. Within these bifurcations are adapted to engage the fiattened perforated ends 34 of the straps 35 secured to the section 16. The bar 30 has a pair of laterally extending members which are formedwith the depending lugs 37, these lugs being arranged for passage through the openings of the bifurcated ends 32 of the perforated ends 34 when the openings of said ends are in registry. The lower portion of the bar 30 is formed with the vertical mounted onthe bar 30 adjacent the keeper member 41 is an arm 43, the lower end portion being formed with a notch 44 adapted to the bar 30, and secured at one end to this pivot member, which member is indicated at 45, is a leaf spring 46, the free end of which bears against an olfset 47 formed on the arm 43 and disposed to engage a shoulder 48 formed on the keeper 41.

In the position shown in Fig. 1, the door is closed and locked the lugs 37 engaged in the openings of the inner ends of the straps 31 and and the plates 19 and 23 down against the sill 1Q. Toopen the door, the handle 29 is thrown into upper position. This lifts the racks 26 and 42, raising the plates 19 and above the sill plate 13 and lifting the lugs 37 out of engagement with the straps. Upon pulling outwardly on the middle hinged portion, the keeper ll will move away from the offset l7 and permit the spring d6 to push the arm l3 so that its notchedend engages with the lug All danger of the bar 30 falling is thus obviated. The sections 15 and 16 can then be folded. on each other and then the entire door either swung inwardly or outwardly of the car. It will, of course, be understood that the beveled end of the section. becomes disengaged from the recess 18 when the door sections swung inwardly.

The provision of the arm 13 on the bar 30'insures that the plate 19 and the bar 30 will be held in elevated position when the door is open, insuring against the fall of the plate which would interfere with the subsequent closing of the door. These plates 19 and 23 cooperating with the sill plate 13, effectively prevent the escape of grain from the car.

The operation is simple, it being only necessary to perform one movement of a single lever to unlock the hinged sections, raise the plates carried by the sections, and the locking of the plate of the section 15 in elevated position.

What is claimed is:

1. The combination with the frame of a grain car doorway having a sill plate and a vertical longitudinal recess in one of the stiles lopies of this patent may be obtained for five cents each, by addressing the Commissioner of Ietents of said frame, of a door hinged to the stile opposite the slotted stile and having its free end en aged in said recess, said door being divided vertically in the center and hinged together, longitudinal plates mounted on the sections of the door at the lower sides thcrcof and vertically slidahle thereon, rack bars carried by the plates, a shaft carried by one of the door sections, pinions on the shaft engaging the said racks, interlocking perforated members carried by the sections of the door, means carried by one of the plates for passage through the said interlocking members, and means carried by the said last named plate for engagement with means carried by one section of the door for holding the plate in clevatcd'position when the door is open.

3. A sectional hinged grain car door, having vertical plates slidable thereon, transverse sill plates carried by the plates and movable verticallv on the lower portions of the door sections. one of said plates being slotted, :1 lug carried by one of the door sections and projecting through the slot, bifurcated'apertured members carried by one of the door sections, apertured members carried by the other section for engagement in the bifurcations in the first members, means carried by said slotted plate for engagement through the registered openings of the apertured members, a transverse shaft haviu pin ions thereon for engagement with the racks, an ope 'ating lever carried by the shaft, a pivoted spring pressed member carried by the slotted plate and formed with a notch, a projection on the pivoted member, and a projection carried by the other section of the door for cngi-igement with the projection of the pivoted member to disengage the pivoted member from the lug when the door is closed.

In testimony whereof, we allix our signatures in the presence of two witnesses.

ANDREW DAVIDSON. MARTIN JENSEN. JOHN P. BLOCKER. lVitnesses E. H. Gmrrm, M. A. I-loormno.

Washington, D. C. 

